CN103456048B - Parking charge method completely based on license plate recognition in parking lot - Google Patents
Parking charge method completely based on license plate recognition in parking lot Download PDFInfo
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Abstract
The invention provides a parking charge method completely based on license plate recognition in a parking lot. By means of establishing an automatic reexamining mechanism for license plate recognition at a headstock and a tailstock, the effect that a parking information table created automatically in real time by the parking lot is 100% correct is ensured, the fastness and reliability of a technological base for follow-up charge operation of the parking lot are further ensured, and parking charge conflicts caused by license plate recognition errors are avoided.
Description
Technical field
The present invention relates to license plate recognition technology, and the Parking toll collection technique based on wireless network relevant to Car license recognition.
Background technology
Although license plate recognition technology is applied more and more extensive in Parking charge, license plate recognition technology self is imperfection also, likely to some car plate None-identified or identification error, causes many Car park payment problems.
Car license recognition relates to License Plate, Character segmentation and character recognition, ultimate principle is based on threshold value, when in License Plate, Character segmentation and character recognition process, certain parameter value is greater than the threshold value of setting, corresponding value is just not more than the value setting threshold value from parameter value different or contrary, finally causes Car license recognition mistake.The existing technical method chosen about threshold value all can not guarantee that at any time threshold value is chosen all correct.Especially be subject to stained at car plate, when uneven illumination is even, threshold value is chosen and is guaranteed correctly, just more easily to cause Car license recognition mistake with regard to more difficult.Therefore, can not under 100% correct prerequisite at Car license recognition, existing parking lot application license plate recognition technology carries out the mistake that the management of parking charge has all consent tacitlyed to Car license recognition certain ratio.
Problem is, for unavoidable Car license recognition mistake, the parking lot of existing application license plate recognition technology does not all take any technical measure to deal with.Such as, " can the automobile expenses payment system of accessible turnover and method " (number of patent application 201110288822.0) is not just considered once which type of result is Car license recognition mistake will cause.Specifically:
Entrance, hangs with the vehicle of car plate A, and its car plate is identified as car plate B, and the managing system of car parking based on Car license recognition still can open banister, allows it enter.But when parking lot is left in parking end, at EXIT, if its car plate is correctly validated into again car plate A, so, the vehicle just do not mated with car plate A in the current parking catalogue in parking lot, causes Car park payment obstacle.For large parking lot, when Car license recognition mistake is more, cause Car park payment obstacle situation often to occur, consequence is just very serious.Especially, above-mentioned " can the automobile expenses payment system of accessible turnover and method " has automatically according to the function of license plate recognition result to car owner's pushing network information, and this just makes the seriousness of Car license recognition mistake more highlight.
Summary of the invention
The present invention proposes a kind of parking lot completely based on the parking charging method of Car license recognition, feature is:
Feel with comprising import headstock, import headstock take pictures and identify, feel import banister, the import tailstock, the import tailstock take pictures and identify, control computer, check equipment, feel outlet headstock, export headstock take pictures and identify, export banister, feel with exporting the tailstock, export the tailstock take pictures and identify, server, step is:
(1) automobile is felt place feel with triggering at import headstock, controls computer and feels the import headstock of unblanking to headstock car plate take pictures and identifying according to import headstock, open import banister simultaneously, allow automobile enter parking lot;
(2) when entering, automobile is felt at the import tailstock with feeling place's triggering, control computer to feel the import tailstock of unblanking to tailstock car plate take pictures and identifying according to the import tailstock, if consistent with the recognition result of tailstock car plate and be not empty-plate to the headstock car plate of import, then by license plate recognition result together with headstock car plate photo opporunity and headstock license plate image upload server, otherwise headstock license plate image and tailstock license plate image are sent to equipment of checking to check for reviewing officer, treat that reviewing officer checks out correct result, this result can be empty-plate, equipment of checking will check result together with headstock car plate photo opporunity and obtain checking license plate image upload server corresponding to result again,
(3) server real-time update parking information table, and headstock car plate photo opporunity is entered as automobile in parking information table the time that Parking starts;
(4) when sailing out of, automobile is felt at outlet headstock with feeling place's triggering, control computer to take pictures and identifying according to feeling the outlet headstock of unblanking to headstock car plate with exporting headstock, if the recognition result of headstock car plate is all not identical with all records in parking information table or empty-plate, then turn artificial treatment, otherwise whether the further car owner of judgement authoring system deducts this Parking Fee automatically according to automotive license plate from the account of binding, if not, then turn manual toll collection, if, then open outlet banister, automobile is allowed to sail out of parking lot, temporary outlet headstock license plate image simultaneously,
(5) automobile of unartificial process and unartificial charge is felt with sailing out of the parking lot triggering outlet tailstock, control computer to take pictures and identifying according to feeling the outlet tailstock of unblanking to tailstock car plate with exporting the tailstock, if consistent with the recognition result of tailstock car plate to the headstock car plate of outlet, then system is according to authorizing from the account of automotive license plate binding bales catch except this Parking Fee, otherwise turns and manually deduct fees;
Described empty-plate, the automobile that fingering enters Parking does not hang car plate;
Described artificial treatment, refers to that parking lot staff determines respective record according to the license board information preparing to sail out of automobile in parking information table, determines parking duration and charge accordingly;
Described manual toll collection, refers to that parking lot staff is sailed out of automobile with no authorized system bales catch in preparation and collected this Parking Fee except when this Parking Fee to its scene;
Describedly manually to deduct fees, refer to parking lot staff system to the headstock car plate of outlet and the recognition result of tailstock car plate inconsistent time, the outlet headstock license plate image of being kept in by manual review, obtain correct car plate, if car owner authoring system deducts this Parking Fee automatically according to automotive license plate from the account of binding, then deduct operation accordingly by system, otherwise remove the deduction of this Parking Fee from.
The present invention establishes the review mechanism to license plate recognition result.First this mechanism be technology, checking unsuccessfully in technology, just gives reviewing officer and check.
" a kind of Car license recognition recheck method and system " (number of patent application 201010596408.1) has disclosed a kind of manual review's method for license plate recognition result.The method is artificial, and being the review mechanism increased on the reason process base of original place, is off-line.Compared with the method, the present invention is:
● technology, automatically utilize tailstock car plate to check headstock car plate;
● incorporate former treatment scheme, as a ring of former treatment scheme, object to guarantee that Car license recognition 100% is correct;
● online, Car license recognition with check real-time process.
For Car license recognition, more technology how to improve Car license recognition rate now.But raising Car license recognition rate and Car license recognition 100% are not correctly the same thing after all.As long as Car license recognition 100% correct just always can not also exist mistake, parking lot will be caused to charge accordingly and to go wrong.Therefore, parking lot be set up and just must check license plate recognition result based on the parking charging method of Car license recognition completely, correct to guarantee Car license recognition 100%.
Improve Car license recognition rate, except the License Plate, Character segmentation, character recognition etc. that relate at Car license recognition are technically made an effort, " a kind of licence plate recognition method and system thereof " (number of patent application 201210535195.0) discloses by multi-angled shooting license plate image, in conjunction with arbitration, improve the method for Car license recognition rate.
Multi-angled shooting license plate image can improve Car license recognition rate, and principle always has the license plate image of an angle to be more conducive to Car license recognition.Multi-angled shooting license plate image carries out identifying: when the license plate image of different angles shooting all can identify, but the result identified is different, this just need as " a kind of licence plate recognition method and system thereof " the arbitration of setting forth, and this referee method is also technology, obtain according to certain algorithm, can not guarantee that arbitration result 100% is correct.Especially, when license plate image self is tarnished, this can cause the image identifying any angle shot all cannot obtain correct result.
Different from multi-angled shooting image recognition, the present invention be directed to headstock and tailstock Car license recognition.Difference is: multi-angled shooting image recognition be all same car plate, and the headstock of identification of the present invention and tailstock car plate different car plates that to be license plate number identical.In fact, headstock and tailstock car plate are at identification scene, and its imaging angle formed for video camera, car plate is photoenvironment locally, and the stained situation of car plate self is not identical.
The identification of multi-angled shooting license plate image obtains different recognition results, and arbitration just therefrom selects one automatically according to certain algorithm, and arbitration can not guarantee that the result selected is correct.In other words, the Different Results that multi-angled shooting identification obtains, does not have each other and checks meaning, does not obtain correct result by checking.Even if different angles shooting identifies that the result obtained is all identical, can not say that its result is exactly correct, because car plate may be tarnished, cause the license plate recognition technology based on threshold value all to draw identical error result.
The present invention by the identification to headstock car plate and tailstock car plate, for be the identical but diverse Car license recognition of car plate of license plate number, the license plate recognition result obtained just has checks meaning, and is check automatically.When headstock Car license recognition is identical with tailstock Car license recognition, for be different car plates, be just equivalent to check, just can believe that result is correct.When headstock Car license recognition is different from tailstock license plate recognition result, any is all can not prove that the result that it is selected is correct, for guaranteeing that Car license recognition correctly allows reviewing officer be checked by artificial mode with regard to needing based on the arbitration algorithm of threshold value equally.
At Entrance, by the Car license recognition to headstock and the tailstock, ensure that Car license recognition 100% is correct, just ensure that parking information table 100% is correct, with regard to ensure that the technical foundation of the follow-up charge operation in parking lot is firmly, trusty.
Above-mentioned banister can change wigwag into.Wigwag is more conducive to the accessible turnover parking lot of automobile, avoids the security incident that barrier operation may cause.
Above-mentioned when manually deducting fees, system to the headstock car plate of outlet and the recognition result of tailstock car plate inconsistent time, the outlet headstock license plate image of being kept in by manual review, obtain correct car plate, if car owner's with no authorized system deducts this Parking Fee automatically according to automotive license plate from the account of binding, because automobile has rolled outlet away from, banister cannot be deducted fees by row again, so, can set up banister more outward at outlet banister, namely exporting banister needs to open for twice, and object allows Car park payment not omit.
For small-sized parking lot, above-mentioned import tailstock ground sense, the import tailstock are taken pictures and identify, and outlet tailstock ground is felt, the outlet tailstock is taken pictures and identified and can not want, and is equivalent to remove automatic review mechanism, only retains artificial reviewing officer and check.
The invention has the beneficial effects as follows:
By setting up the automatic review mechanism of the Car license recognition for headstock and the tailstock, ensure that 100% of the parking information table that parking lot creates automatically is in real time correct, and then ensure that the firm and trusted of the technical foundation that the follow-up charge in parking lot operates, avoid the Car park payment contradiction caused because of Car license recognition mistake.
Accompanying drawing explanation
The sense of Fig. 1 ground and the relation of taking pictures and identifying.
Embodiment
In specific implementation process, for small-sized parking lot, above-mentioned import tailstock ground sense, the import tailstock are taken pictures and identify, and outlet tailstock ground is felt, the outlet tailstock is taken pictures and identified and can not want, be equivalent to remove automatic review mechanism, only retain artificial reviewing officer and check.Although the efficiency checked can be low, for small-sized parking lot, the cost that its technology realizes is also lower.
Namely according to the scale in parking lot, different technology ways of realization can be had to checking of Car license recognition, but essence is all correct by checking the parking information table 100% guaranteeing parking lot, and then guarantee the firm and trusted of the technical foundation that the follow-up charge in parking lot operates, all belong to claim categories of the present invention.
Claims (2)
1. parking lot is completely based on a parking charging method for Car license recognition, and feature is:
Feel with comprising import headstock, import headstock take pictures and identify, feel import banister, the import tailstock, the import tailstock take pictures and identify, control computer, check equipment, feel outlet headstock, export headstock take pictures and identify, export banister, feel with exporting the tailstock, export the tailstock take pictures and identify, server, step is:
(1) automobile is felt place feel with triggering at import headstock, controls computer and feels the import headstock of unblanking to headstock car plate take pictures and identifying according to import headstock, open import banister simultaneously, allow automobile enter parking lot;
(2) when entering, automobile is felt at the import tailstock with feeling place's triggering, control computer to feel the import tailstock of unblanking to tailstock car plate take pictures and identifying according to the import tailstock, if consistent with the recognition result of tailstock car plate and be not empty-plate to the headstock car plate of import, then by license plate recognition result together with headstock car plate photo opporunity and headstock license plate image upload server, otherwise headstock license plate image and tailstock license plate image are sent to equipment of checking to check for reviewing officer, treat that reviewing officer checks out correct result, this result can be empty-plate, equipment of checking will check result together with headstock car plate photo opporunity and obtain checking license plate image upload server corresponding to result again,
(3) server real-time update parking information table, and headstock car plate photo opporunity is entered as automobile in parking information table the time that Parking starts;
(4) when sailing out of, automobile is felt at outlet headstock with feeling place's triggering, control computer to take pictures and identifying according to feeling the outlet headstock of unblanking to headstock car plate with exporting headstock, if the recognition result of headstock car plate is all not identical with all records in parking information table or empty-plate, then turn artificial treatment, otherwise whether the further car owner of judgement authoring system deducts this Parking Fee automatically according to automotive license plate from the account of binding, if not, then turn manual toll collection, if, then open outlet banister, automobile is allowed to sail out of parking lot, temporary outlet headstock license plate image simultaneously,
(5) automobile of unartificial process and unartificial charge is felt with sailing out of the parking lot triggering outlet tailstock, control computer to take pictures and identifying according to feeling the outlet tailstock of unblanking to tailstock car plate with exporting the tailstock, if consistent with the recognition result of tailstock car plate to the headstock car plate of outlet, then system is according to authorizing from the account of automotive license plate binding bales catch except this Parking Fee, otherwise turns and manually deduct fees;
Described empty-plate, the automobile that fingering enters Parking does not hang car plate;
Described artificial treatment, refers to that parking lot staff determines respective record according to the license board information preparing to sail out of automobile in parking information table, determines parking duration and charge accordingly;
Described manual toll collection, refers to that parking lot staff is sailed out of automobile with no authorized system bales catch in preparation and collected this Parking Fee except when this Parking Fee to its scene;
Describedly manually to deduct fees, refer to parking lot staff system to the headstock car plate of outlet and the recognition result of tailstock car plate inconsistent time, the outlet headstock license plate image of being kept in by manual review, obtain correct car plate, if car owner authoring system deducts this Parking Fee automatically according to automotive license plate from the account of binding, then deduct operation accordingly by system, otherwise remove the deduction of this Parking Fee from.
2. method according to claim 1, feature is: set up banister more outward at outlet banister, so that system to the headstock car plate of outlet and the recognition result of tailstock car plate inconsistent time, the outlet headstock license plate image of being kept in by manual review, obtain correct car plate, deduct fees when car owner's with no authorized system deducts this Parking Fee automatically according to this automotive license plate from the account of binding, object allows Car park payment not omit.
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